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denis-greek [22]
3 years ago
12

A fish tank is a cube. Its side length is 4 1/2 feet. The volume of water needed to completely fill the fish tank is ___ cubic f

eet.
Mathematics
1 answer:
GalinKa [24]3 years ago
6 0

The equation for the volume of a cube is V=s^3, where V is volume and s is side length.  Plug in and solve:

V=4.5^3

V=4.5*4.5*4.5

V=91.125ft^3

Hope this helps!!

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Seven times a number minus the number is -48.
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Same as the other one :) if u thought my answers were helpful to you please mark me as brainliest :)

5 0
3 years ago
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How do you solve this? cosθ-tanθcosθ=0
laila [671]
First, lets note that tan(\theta)\cdot cos(\theta)=sin(\theta). This leads us with the following problem:

cos(\theta)-sin(\theta)=0

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cot(\theta)=1

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4 0
3 years ago
If you add​ Natalie's age and​ Fred's age, the result is 39. If you add​ Fred's age to 4 times​ Natalie's age, the result is 78.
Darina [25.2K]

Step-by-step explanation:

We can write this word problem as two variables. Let us assume that:

x = Natalie's age

y = Fred's age

The first part of the word problem is that "If you add​ Natalie's age and​ Fred's age, the result is 39." Therefore:

Natalie's age + Fred's age = 39

x + y = 39

This will be our first equation. The second equation can be derived from the statement that "If you add​ Fred's age to 4 times​ Natalie's age, the result is 78." Therefore:

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We can now form a system of equations and solve for both x and y:

\left \{ {{x + y = 39} \atop {4x + y = 78}} \right.

The simplest way to solve would be using the Substitution method, as seen here:

x + y = 39

y = 39 - x

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x = 13

x + y = 39

13 + y = 39

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Remember that x = Natalie's age and y = Fred's age. Therefore, Natalie's age is 13 years old and Fred's age is 26 years old.

8 0
2 years ago
Solve each inequality <br> 2v&gt;10
34kurt
Hey there 

Solution

1) <span>Divide each side by</span> 2 
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2) Simplify \frac{10}{2} to 5
<span>v>5

Answer -- </span>v><span>5</span>
4 0
3 years ago
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A recatangle's length is 2 units more than twice its width.It's area is 40 square units.The equation w(2w+2)=40 can be used to f
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The answer is four because you solve simplify the equation given and W could equal 4 or -5, and since the width can not be a negative number it has to be 4.
6 0
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